Transfer sheet arrangement for use with continuous copy sheets in typewriters and the like



Jl11Y'23, 1940- w. DOUGLAS 2209,19 5

TRANSFER SHEET ARRANGEMENT FOR USE WITH CONTINUOUS COPY SHEETS IN TYPEWRITERS AND THE L IKE I Filed Feb. 24, 1938 a i -p '2 6 M a N fimemar:

WILUHM DouGLFis RTT'ORNLY Patented July 23, 1940 UNITED STATES TRANSFER SHEET ARRANGEMENT FOR USE WITH CONTINUOUS COPY SHEETS IN TYYEWRITERS AND THE LIKE I William Douglas, Whitstable, England Application February 24, In Great Britain 1938, Serial No. 192,229 March 10, 1937 6 Claims. (01. 282-29) This invention relates to transfer sheet arrangements for use with continuous web copy sheets, either interfold or'fanfold, in typewriters and the like.

The object of the invention is to provide an assembly of carbon transfer sheets which can be longitudinally displaced relatively to a set of continuous web copy sheets without requiring the provision of either a retractile carriage or an anchoring device, although capable of being used therewith. The carbon transfer sheet assembly is therefore capable of being used with continuous web copy sheets in an ordinary typewriter, "as well as in a'billingmachine of either the cylindrical platen or fiat bed type, and in attachments to typewritersproviding carbon shift facilities. l

To render one end of each, usually very flimsy, carbon transfer sheet sufiiciently substantial in texture to avoid tearing away from any means of attachment at a lateral border, each carbon transfer sheet is provided with a more substantial heading or reinforcement. Such heading or reinforcement may be of uncarbonised paper to which the carbon transfer sheet is afiixed for instance as by adhesive, or may be an uncarbonised portion of a stout carbon transfer sheet.

For the purpose of enabling a headed carbon transfer sheet to be readily longitudinally displaced relatively to a set of continuous Web copy sheets interleaved therewith, according to the invention the heading of the carbon transfer sheet is embraced between strips secured together and to the heading of the carbon transfer sheet at two separated points and extending stiiiiy from laterally beyond the points of attachment transversely on to the area of the heading of the carbon transfer sheet. The headings at the respective end of a set of carbon transfer sheets, which in use is the end remotelfrom the extremity of the portion in use of the copy sheets, are thus to a certain degree pinched along a transverse area between the two stiff embracing transverse strips. Support is thereby J afforded against the transfer sheets buckling during the longitudinal displacement. Such displacement can be effected by holding one end or both ends of the embracing transverse strips whilst the copy sheets and the carbon transfer sheets are relatively longitudinally displaced by pulling the extremity of the copy sheets. Such displacement can be efiected by pulling the extremity of the copy sheets whilst the embracing transverse strips are held at one or both ends laterally outside the copy sheets, or by thrusting back the transverse strips andthereby the transfer sheets, whilst the extremity of the copy sheets is held.

More particularly the embracing strips keep flat the portions of the headings of the carbon transfer sheets, where they extend laterally to their points of attachment beyond the flattening restraint of the interleaved copy sheets.

The two point attachment of the carbon transfer sheet headings to the embracing strips pre vents slewing of the carbon transfer sheets out of register with each other. The attachment may be at either end of the embracing strips or may be atone end only thereof, the two points being separated in the longitudinal, direction of the sheets. To enable thecarbon transfer sheets to be interleaved with a 'set of fanfold copy sheets, or with interfold sheets to reduce the thickness of the attachment at each side, some of the carbon transfer sheets may be secured to the embracing strips only at one lateral border whilst the remainder are secured thereto only at the other lateral border.

One of the transverse embracing strips intersecured at both ends, is divided at its midlength to facilitate interleaving.

Representative examples of carbon transfer sheet arrangements according to the invention are illustrated, somewhat diagrammatically on the accompanying drawing, in which:

Fig. 1 is a plan of a set of carbon transfer sheets secured between embracing strips, and

Fig. 2 is a section on the line 2-2 of Fig. 1.

Referring to the drawing, a are superposed carbon transfer sheets with laterally projecting reinforced headings. The reinforced headings of the carbon transfer sheets a are embraced between stiffer strips 1), for instance of manila paper, which extend across the headings on both faces of the set of carbon transfer sheets. The embracing strips b are secured together at both ends and the carbon transfer sheets a are secured thereto and together, by eyelets c.

The carbon transfer sheets a are secured together and to the respective end of the embracing strips b, at only one lateral border. The securing of the carbon transfer sheets together and to the respective end of the embracing strips b is effected by two eyelets c spaced apart longitudinally of the sheets. Some of the carbon transfer sheets are secured together and to the embracing strips only at one lateral border, whereas the remainder are similarly secured only at the opposite lateral border. This permits interleaving .of the carbon transfer sheets with fanfold copy sheets.

A notch g is formed in the end of the sheets a to, enable the end of copy sheets, which when the device is in use are interleaved therewith, to

be grasped.

The embracing strip 2) which comes against the pressure rolls of a typewriter, is divided at its midlength m and each portion is formed with a convergent edged tongue e. The gap at m becomes covered by the first copy sheet of an interfold set. With fanfold copy sheets, one

.Although eyelets are'illustrated, other means of 'attachment,'such as wire staples or stitching,

maybe provided where suitable.

I claim: I

l. In combination, a set of carbon transfer sheets, paper headings on and each having at only one lateral border a portion projecting laterally beyond said carbon transfer sheets, a strip of-vmaterial attached to said projecting portions of said headings at two separated points and extending stiffly from beyond said points of attachment on one face of and across said headings to beyond the free lateral border thereof, andtwo strips of material each attached at only one end to said first mentioned strip at two separated points and each extending stifily from beyond' said points of attachment from a diiferent end of said first mentioned strip and on the other face of said headings to within the width bon transfer sheets.

2. A combination as defined in claim 1, having on said strips a convergent edged tongue extend,- ing away from said carbon transfer sheets.

3. A combination as defined in claim 1, in which said two strips conjointly extend away of said carfrom said carbon transfer sheets as a convergent edged tongue.

'4. In combination, a set of carbon transfer sheets, paper headings on and each having a portion projecting laterally some only beyond one lateral border and the remainder only beyond the other lateral border of said carbon transfer sheets, a strip of material attached to saidprojecting portions of said headings at two separated points and extending stifily from beyond said points of attachment on one face of and across said headings, and two strips of material each attached at onlyone end to said first mentioned strip at two separated points and each extending stifiiy from beyond said points of attachment from a different end of said first mentioned strip and on the other face of said headings to within the width of said carbon transfer sheets.

5. A combination as defined in claim 4, having on said strips a convergent edged tongue extend-. ing away from said carbon transfer sheets,

6. A combination as defined in claim 4, in

which said two strips conjointly extend away I from said carbon transfer sheets as a convergent edged tongue. A v

' WILLIAM DOUGLAS. 

